Railways
R.R.C. (Ahmedabad) Solved Paper Held on 1st Shift 2-11-2014
question_answer
In an examination, a student's average marks were 63. If he had obtained 20 more marks in Geography and 2 more marks in History, then his average marks would have been 65. How many papers were there in the examination?
A)10
B)11
C)12
D)9
Correct Answer:
B
Solution :
Suppose there were x papers in the examination. Now, \[63x+20+2=65x\] \[2x=22\] \[x=11\]